Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam
e-day ticket is $50 . For one performance, 20 advance tickets and 40 same-day tickets were sold. The total amount paid for the tickets was $1700 . What was the price of each kind of ticket?
The quantity demanded would increase due to the cheaper price people would want to take advantage and buy it when it was on sale. There is not enough information to determine whether the supply or demand would maintain so D is your answer.